About: http://webisa.webdatacommons.org/391691597

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Such transmission systems are used, for example, for transmitting speech signals by a transmission medium such as a radio channel, a coaxial cable or a glass fibre.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com